// 报错信息
org.apache.ibatis.binding.BindingException: Invalid bound statement (not found): com.taotao.mapper.TbItemMapper.selectByPrimaryKey

// 没有加载 mapper.xml的文件，找不到mapper映射文件，需要在父工程pom.xml添加以下代码
<build>
    <resources>
        <resource>
            <directory>src/main/java</directory>
            <includes>
                <include>**/*.properties</include>
                <include>**/*.xml</include>
            </includes>
            <filtering>false</filtering>
        </resource>
    </resources>   
</build>